This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / xen / netback / common.h

diff --git a/drivers/xen/netback/common.h b/drivers/xen/netback/common.h
new file mode 100644 (file)
index 0000000..dfb750e
--- /dev/null
+++ b/drivers/xen/netback/common.h
@@ -0,0 +1,103 @@
+/******************************************************************************
+ * arch/xen/drivers/netif/backend/common.h
+ */
+
+#ifndef __NETIF__BACKEND__COMMON_H__
+#define __NETIF__BACKEND__COMMON_H__
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <asm-xen/ctrl_if.h>
+#include <asm-xen/xen-public/io/netif.h>
+#include <asm/io.h>
+#include <asm/pgalloc.h>
+
+#if 0
+#define ASSERT(_p) \
+    if ( !(_p) ) { printk("Assertion '%s' failed, line %d, file %s", #_p , \
+    __LINE__, __FILE__); *(int*)0=0; }
+#define DPRINTK(_f, _a...) printk(KERN_ALERT "(file=%s, line=%d) " _f, \
+                           __FILE__ , __LINE__ , ## _a )
+#else
+#define ASSERT(_p) ((void)0)
+#define DPRINTK(_f, _a...) ((void)0)
+#endif
+
+typedef struct netif_st {
+    /* Unique identifier for this interface. */
+    domid_t          domid;
+    unsigned int     handle;
+
+    u8               fe_dev_addr[6];
+
+    /* Physical parameters of the comms window. */
+    unsigned long    tx_shmem_frame;
+    unsigned long    rx_shmem_frame;
+    unsigned int     evtchn;
+    int              irq;
+
+    /* The shared rings and indexes. */
+    netif_tx_interface_t *tx;
+    netif_rx_interface_t *rx;
+
+    /* Private indexes into shared ring. */
+    NETIF_RING_IDX rx_req_cons;
+    NETIF_RING_IDX rx_resp_prod; /* private version of shared variable */
+    NETIF_RING_IDX tx_req_cons;
+    NETIF_RING_IDX tx_resp_prod; /* private version of shared variable */
+
+    /* Transmit shaping: allow 'credit_bytes' every 'credit_usec'. */
+    unsigned long   credit_bytes;
+    unsigned long   credit_usec;
+    unsigned long   remaining_credit;
+    struct timer_list credit_timeout;
+
+    /* Miscellaneous private stuff. */
+    enum { DISCONNECTED, DISCONNECTING, CONNECTED } status;
+    int active;
+    /*
+     * DISCONNECT response is deferred until pending requests are ack'ed.
+     * We therefore need to store the id from the original request.
+     */
+    u8               disconnect_rspid;
+    struct netif_st *hash_next;
+    struct list_head list;  /* scheduling list */
+    atomic_t         refcnt;
+    struct net_device *dev;
+    struct net_device_stats stats;
+
+    struct work_struct work;
+} netif_t;
+
+void netif_create(netif_be_create_t *create);
+void netif_destroy(netif_be_destroy_t *destroy);
+void netif_creditlimit(netif_be_creditlimit_t *creditlimit);
+void netif_connect(netif_be_connect_t *connect);
+int  netif_disconnect(netif_be_disconnect_t *disconnect, u8 rsp_id);
+void netif_disconnect_complete(netif_t *netif);
+netif_t *netif_find_by_handle(domid_t domid, unsigned int handle);
+#define netif_get(_b) (atomic_inc(&(_b)->refcnt))
+#define netif_put(_b)                             \
+    do {                                          \
+        if ( atomic_dec_and_test(&(_b)->refcnt) ) \
+            netif_disconnect_complete(_b);        \
+    } while (0)
+
+void netif_interface_init(void);
+void netif_ctrlif_init(void);
+
+void netif_schedule_work(netif_t *netif);
+void netif_deschedule_work(netif_t *netif);
+
+int netif_be_start_xmit(struct sk_buff *skb, struct net_device *dev);
+struct net_device_stats *netif_be_get_stats(struct net_device *dev);
+irqreturn_t netif_be_int(int irq, void *dev_id, struct pt_regs *regs);
+
+#endif /* __NETIF__BACKEND__COMMON_H__ */